Manual d'usuari de la calculadora científica Sharp EL-546XTB-SL

1. Introducció

This manual provides detailed instructions for the proper use and maintenance of your Sharp Scientific Calculator EL-546XTB-SL. Designed for students and professionals, this calculator features Direct Algebraic Logic (D.A.L.) for intuitive input and display, along with a wide range of scientific, statistical, and equation-solving functions. Please read this manual thoroughly to maximize the calculator's capabilities.

This image displays the Sharp EL-546XTB-SL Scientific Calculator. It features a black casing, a two-line LCD display showing '1234567890', and a comprehensive keypad. Key sections include numeric input, arithmetic operations, scientific functions (sin, cos, tan, log, ln), mode selection, and memory functions. The solar panel is visible at the top.

2. Configuració

2.1 Font d'alimentació

The EL-546XTB-SL calculator is twin-powered, operating on both solar energy and a lithium-ion battery. Under sufficient lighting, the calculator will primarily use solar power. In low-light conditions, it automatically switches to battery power. The battery is pre-installed and typically does not require immediate replacement.

2.2 Encès inicial

1. Premeu el botó ON/C key located in the upper right corner of the keypad to turn on the calculator.
2. The display will show '0' or the last calculated result.
3. If the display is dim or blank, ensure the calculator is exposed to adequate light or consider battery replacement if issues persist after prolonged use.

3. Instruccions de funcionament

3.1 Lògica algebraica directa (DAL)

The EL-546XTB-SL utilizes Direct Algebraic Logic (D.A.L.), allowing you to input equations exactly as they are written. This simplifies complex calculations by displaying expressions and results in a natural format.

3.2 Operacions aritmètiques bàsiques

Per fer càlculs bàsics:

1. Enter the first number.
2. Press the desired operation key (+, -, ×, ÷).
3. Enter the second number.
4. Premeu = per mostrar el resultat.

3.3 Using Secondary Functions (2nd F) and Alpha Functions (ALPHA)

• Premeu 2n F (second function) to access the orange-colored functions printed above certain keys. For example, to calculate sin^-1, premeu 2n F aleshores pecat.
• Premeu ALFA to access the light blue-colored variables or functions printed above certain keys. This is often used for memory recall or specific modes.

3.4 Selecció del mode

The calculator offers 6 operational modes. Press the MODE key to cycle through or select a specific mode:

• NORMAL: Càlculs aritmètics i científics estàndard.
• ESTADÍSTICA: Statistical calculations (1-variable and 2-variable).
• COMPLEX: Calculations involving complex numbers.
• MATRIU: Matrix operations.
• LLISTA: List-based calculations.
• EQUATION: Solves quadratic, cubic, and 3-variable linear equations.

3.5 Funcions de memòria

The calculator includes 8 temporary memory buttons and 4 formula memory buttons. Use STO (Botiga) i RCL (Recall) keys in conjunction with variable keys (A, B, C, D, X, Y, M, etc.) to manage stored values.

3.6 Equation Solvers

In EQUACIÓ mode, you can solve:

• Quadratic equations (ax² + bx + c = 0)
• Cubic equations (ax³ + bx² + cx + d = 0)
• 3-variable linear equations (e.g., ax + by + cz = d)

Follow the on-screen prompts to input coefficients.

3.7 Statistical Calculations

In ESTADÍSTICA mode, you can perform 1-variable and 2-variable statistical analyses. Use the DATA CD key to input data and access statistical results like mean, standard deviation, and regression analysis.

3.8 Physical Constants and Metric Conversions

The calculator includes a library of physical constants and metric conversion functions. Refer to the calculator's key markings and the 2n F or ALFA functions for specific access methods.

4. Funcions clau anteriorsview

The EL-546XTB-SL keypad is organized for efficient use. Below is a general overview of key groups:

• Numeric Keys (0-9, .): Per introduir números.
• Arithmetic Operators (+, -, ×, ÷, =): Per a càlculs bàsics.
• Function Keys (sin, cos, tan, log, ln, x², √, etc.): For scientific and mathematical operations.
• Mode Keys (MODE, HOME): To select operational modes and return to the home screen.
• Modifier Keys (2nd F, ALPHA): To access secondary and alpha functions.
• Memory Keys (STO, RCL, M+, M-): For storing and recalling values.
• Navigation Keys (Arrow keys): To move the cursor on the display for editing expressions.
• Clear/Delete Keys (ON/C, DEL, INS): To clear entries, delete characters, or insert characters.

5. Manteniment

5.1 Neteja

To clean the calculator, use a soft, dry cloth. Do not use abrasive cleaners, solvents, or wet cloths, as these can damage the casing o components interns.

5.2 Emmagatzematge

When not in use, store the calculator in its protective hard case to prevent scratches and damage. Avoid exposing the calculator to extreme temperatures, humidity, or direct sunlight for extended periods.

5.3 Informació sobre la bateria

The calculator uses one Lithium Ion battery (included). While the calculator is twin-powered, the battery provides backup power. If the display becomes consistently dim even in good lighting, or if the calculator fails to power on, the battery may need replacement. Consult a qualified technician for battery replacement to avoid damaging the device.

6. Solució De Problemes

• La pantalla està en blanc o té poca llum: Ensure adequate lighting for solar power. If the issue persists, the battery may be low or depleted.
• Calculator does not respond: Premeu el botó ON/C key. If unresponsive, locate the RESET button (often a small hole requiring a thin object like a paperclip) and press it gently. This will clear all memory and settings.
• Resultats incorrectes: Check the current mode (e.g., DEG/RAD, NORMAL/STAT). Ensure correct input syntax, especially with parentheses. A reset may resolve persistent calculation errors.
• Missatges d'error: Refer to the calculator's on-screen error codes (if any) for specific meanings. Common errors include 'MATH ERROR' (invalid operation) or 'SYNTAX ERROR' (incorrect input format).

7. Especificacions

• Nom del model: EL-546XTB-SL
• Marca: Afilat
• Tipus de visualització: LCD, 2 línia
• Font d'alimentació: Twin Powered (Solar & Battery)
• Tipus de bateria: Ió de liti (1 inclosa)
• Material: Plàstic
• Dimensions: Approximately 3-5/16"W × 5-5/16"H × 5/8"D (8.4 cm W × 13.5 cm H × 1.6 cm D)
• Pes: Aproximadament 160 g
• Característiques principals: Direct Algebraic Logic (D.A.L.), 6 Modes (Normal, Stat, Complex, Matrix, List, Equation), 8 Temporary & 4 Formula Memory Buttons, Quadratic & Cubic Equation Solvers, 3 Variable Linear Equation Solvers, 1 & 2 Variable Statistics, Physical Constants & Metric Conversions.